Barnum Effect is named after barnum, a famous American circus artist, because barnum once famously said that "any first-class circus should be able to let everyone see their favorite programs".
A psychologist has done this experiment. After he completed the Minnesota Multiphasic Personality Questionnaire (MMPI) for a group of people, he presented two results for the participants to judge which one was his own. In fact, one is the result of the participants themselves and the other is the average result of most people's answers. Participants actually thought that the latter expressed their personality characteristics more accurately.
This study tells us that people are easily hinted by external information, which leads to the deviation of self-cognition, and a general description of personality reveals their own characteristics very accurately. There was once a psychologist who used a common sentence that was suitable for almost anyone to let college students judge whether it was suitable for them. Results Most college students think that this sentence describes themselves in detail and accurately.